2018 Impact factor 2.481
Hadrons and Nuclei
Eur. Phys. J. A 6, 43-48

Structure of neutron rich palladium isotopes produced in heavy ion induced fission

M. Houry1 - R. Lucas1 - M.-G. Porquet2 - Ch. Theisen1 - M. Girod3 - M. Aiche4 - M.M. Aleonard4 - A. Astier5 - G. Barreau4 - F. Becker1 - J.F. Chemin4 - I. Deloncle2 - T.P. Doan4 - J.L. Durell6 - K. Hauschild1 - W. Korten1 - Y. Le Coz1 - M.J. Leddy6 - S. Perries5 - N. Redon5 - A.A. Roach6 - J.N. Scheurer4 - A.G. Smith6 - B.J. Varley6

1 CEA/SACLAY, DAPNIA/SPhN, F-91191 Gif sur Yvette, France
2 CSNSM, CNRS-IN2P3 et Universit‰ de Paris-Sud, F-91405 Orsay, France
3 CEA/DIF, DPTA/SPN, F-91680 Bruyères-le-Châtel, France
4 CENBG, Domaine du Haut Vigneau, F-33175 Gradignan, France
5 IPNL, 43, Boulevard du 11 novembre 1918, F-69622 Villeurbanne, France
6 Department of Physics and Astronomy, Univ. of Manchester, M13 9PL, UK

Received: 30 June 1999 Communicated by B. Povh

Abstract
New band structures have been observed in 112Pd, 113Pd, 115Pd and 118Pd produced via the fusion-fission reaction 12C+238U at a bombarding energy of 90 MeV. $\gamma-\gamma-\gamma$ coincidence measurements have been performed with the Euroball III array. The first crossings observed in even-mass palladium up to A=118 are interpreted as the alignment of a $\nu h_{11/2}$ pair. This interpretation is supported by the rotational behavior of odd-mass palladium. Hartree-Fock-Bogoliubov calculations using D1S-Gogny force suggest a similar interpretation consistent with a prolate deformation.

PACS
25.70.Jj Fusion and fusion-fission reaction - 23.20.Lv Gamma transitions and level energies - 21.60.Ev Collective models - 21.60.Jz Hartree-Fock - 27.60.+j 90 $\le$ A $\leq$ 149


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